Microchip Technology MCP42XX, Руководство пользователя

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MCP42XX PICtail™ Plus Daughter Board User’s Guide
DS51759A-page 14
©
2008 Microchip Technology Inc.
2.4 EXPLORER 16 DAUGHTER DEMO BOARD DEMOS
This section describes how to demonstrate the MCP42XX PICtail Plus Daughter
Board. The demos will either use an Explorer 16 Developers Board or a PICkit Serial
Analyzer.
The demo using the Explorer 16 Developers Board is discussed in
Section 2.4.1 “Demos with the Explorer 16 Starter Kit” . While the demo using the
PICkit Serial Analyzer is discussed in Section 2.4.2 “Demo with the PICkit Serial
Analyzer” .
2.4.1 Demos with the Explorer 16 Starter Kit
This Demo will use the Explorer 16 Starter Kit. This board needs to be programmed
with the supplied firmware. This firmware can be found on the included CD-ROM or can
be downloaded from the Microchip web site. It is good practice to check the Microchip
web site for updates to the demo firmware.
The supplied firmware program has two modes of operation. In the first mode, the
program generates a saw wave on the VW1 pin (see Figure 2-6). The second mode is
to display the operation of High Voltage commands to Wiper 1 (see Figure 2-7). This is
where the CS signal is driven to 9V.
The program selected is determined after a reset (including the Power-on reset) by the
state of the S3 switch. The programs are:
• Wiper 1 Saw Wave (Switch S3 not depressed)
• Increment / Decrement with High Voltage Write to Non-Volatile Wiper 1 Register
(Switch S3 depressed)
Table 2-1 shows the required hardware to operate the demo.
TABLE 2-1: DEMO HARDWARE REQUIREMENTS
Note: Both demos require that the MCP42XXDM-PTPLS board jumper settings
are as shown in Figure 2-4.
Note: For information on how to use the MPLAB-IDE, ICD-2, or any other aspect
of the PIC Development tool platform, please refer to the appropriate
documentation.
Item # Description Comment
1 Explorer 16 Developers Board and power supply
(DV164033) Note 1
2 MCP42XXDM-PTPLS
3 4 Channel oscilloscope Note 2
Note 1: A development tool to program the Explorer 16 Developers Board is required. This
development tool could be Microchip’s MPLAB ICD-2.
2: An oscilloscope with fewer channels can be used, but this will require that the
probes be moved between signals to verify the output states. A 2 channel is the
minimum requirement, but is not recommended.